Good effort, but without sounding too harsh, one needs to have a decent photo to be able to work with to improve
Unfortunately, I don't think the out of focus can be improved on this image. Furthermore, as the sign is so prominent, there really is no point in trying to eliminate it. It's definitely the sign that is the prominent feature in this photo - if that was the aim, then you achieved it, however the light on top of the sign spoils the effect.
Also, there is a little pointy red thing on the right side of the pic? Is that an Arrow, or just some random pointy thing. My point (pardon the pun) being, it does nothing to add to the photo. This is an example of something that could easily have been cloned out.
Last but not least, manual settings are always the best, for fast moving subjects. I dabble a bit in bird/aviation photography, and believe me, birds are probably the worse subject to photograph.
Good idea though, with the sign etc.
Feel free to browse my album, below. All taken at either RIAT or Farnborough.
https://flic.kr/s/aHsk3B5LzM